<template>
  <div class="login_container">
    <div class="login_box">
      <!--图标-->
      <div class="avatar_box">
        <img src="../assets/img0.jpg" alt="">
      </div>
      <!--登录表单-->
      <el-form class="login_form" ref="loginFormRef" :model="loginForm" :rules="loginFormRules" >
        <el-form-item prop="username">
          <el-input v-model="loginForm.username" >
            <i slot="prefix" class="el-icon-user"></i>
          </el-input>
        </el-form-item>
        <el-form-item prop="password">
          <el-input v-model="loginForm.password" type="password">
            <i slot="prefix" class="el-icon-unlock"></i>
          </el-input>
        </el-form-item>
        <el-form-item class="btns">
          <el-button type="primary" @click="login">登录</el-button>
          <el-button type="info" @click="resetLoginForm">重置</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>

<script>
export default {
  data () {
    return {
      /* 登录表单的数据绑定对象 */
      loginForm: {
        username: '',
        password: ''
      },
      /* 登录表单的验证规则对象 */
      loginFormRules: {
        /* 验证用户名输入 */
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' },
          { min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur' }
        ],
        /* 验证密码输入 */
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          { min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur' }
        ]
      }
    }
  },
  methods: {
    resetLoginForm () {
      this.$refs.loginFormRef.resetFields()
    },
    login () {
      this.$refs.loginFormRef.validate(async valid => {
        if (!valid) return
        const { data: res } = await this.$http.post('login', this.loginForm)
        if (res.meta.status !== 200) return this.$message.error('登录失败!')
        this.$message.success('登录成功!')
        window.sessionStorage.setItem('token', res.data.token)
        this.$router.push('/home')
      })
    }
  }
}
</script>

<style lang="less" scoped>
.login_container{
  background-color: #2b4b6b;
  height: 100%;
}
.login_box{
  width: 450px;
  height: 300px;
  background-color: #fff;
  border-radius: 3px;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%,-50%);
  .avatar_box{
    height: 130px;
    width: 130px;
    border: 1px solid #eee;
    border-radius: 50%;
    padding:10px;
    box-shadow: 0 0 10px #ddd;
    position: absolute;
    left: 50%;
    transform: translate(-50%,-50%);
    background-color: #fff;
    img {
      width: 100%;
      height: 100%;
      border-radius: 50%;
      background-color: #eee;
    }
  }
}

.login_form{
  position: absolute;
  bottom: 0;
  width: 100%;
  padding: 0 20px;
  box-sizing: border-box;
}

.btns{
  display: flex;
  justify-content: center;
}

</style>
